|Type|Manufacturer|Numbers|Year built|Quantity built|Power (horsepower)|Max Speed (km/h)|Note|
|---|---|---|---|---|---|---|---|
|RHN|Hitachi|1011-1048 (power cars) 11-48 (trailer cars)|1967|38+38|220|90|Now use as a Northeastern line commuter train.|
|RTS|Tokyu|D9-D16 (power cars) TS4-TS7 (center/trailer cars)|1971|8+4|220|70|Ex-Mahachai railways, to be refurbished. Similar bodyshell of THN and NKF but with different formation (power car-2 trailer cars).|
|THN|Tokyu, Hitachi and Nippon Sharyo|1101–1140|1983|40|235|105|Similar to NKF.|
|NKF|Nippon Sharyo, Hitachi, Fuji Heavy Industries,Kawasaki Heavy Industries, Niigata Tekkousho, and Kinki Sharyo|1201–1264, (center) 2101-2112|1985|64+12|235|105|Similar to THN, but with plastic chairs.|
|ASR (Class 158 Express Sprinter)|BREL, Derby Works|2501–2512, (center) 2113-2120|1991|12+8|285|120|Metre gauge version of British Rail Class 158, with different gangways and couplers, and with inward-opening slam doors instead of plug doors. 3-car set until 2011, when all were refurbished with new seats, vinyl floors, an extra coach and new livery.|
|APD .20|Daewoo Heavy Industries|2513-2524 (center) 2121-2128|1995|10+8|298|120|First batch, narrow body.|
|APD .60|Daewoo Heavy Industries|2525-2544|1996|20+40|298|120|Second batch, wide body.|

Question: what are the number of times tokyu is listed as a manufacturer on this chart?
Answer: 2